:root {
  --bg: #0a0a0a;
  --purple: #7c4dda;
  --purple-dark: #6941a4;
  --text: #f5f5f5;
  --text-muted: #9a9a9a;
  --green: #2ecc71;
  --red: #e74c3c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  background: radial-gradient(circle at 50% 30%, #150c22 0%, var(--bg) 65%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  text-align: center;
  padding: 2rem 1.25rem;
}

.logo {
  width: min(420px, 80vw);
  height: auto;
  filter: drop-shadow(0 0 40px rgba(124, 77, 218, 0.25));
}

.cta {
  display: inline-block;
  padding: 0.85rem 2.25rem;
  border-radius: 999px;
  background: var(--purple);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.cta:hover,
.cta:focus-visible {
  background: var(--purple-dark);
  transform: translateY(-1px);
}

footer {
  color: #555;
  font-size: 0.8rem;
}